Question about gloves

I sent my son to spar with some students at a school where they wear space helmets instead of head gear. This was pretty hard (80%) sparring, and he was wearing MMA gloves over wraps. He ended up injuring his finger tips after landing an off target overhand to the hard helmet of his opponent. My question is: Can anyone recommend an open palmed 4 oz glove that is a) not fingerless, and b) not thumblocked.

thanks.

Now darkness comes; you don't know if the whales are coming. - Royce Gracie

If you two were posting in response a vid I there would be something to talk about. Since I'm asking an equipment question to address my kid's injury, and you have no basis for analyzing the mechanics of the punch, I don't really think this is funny.

Now darkness comes; you don't know if the whales are coming. - Royce Gracie